{"cve":"CVE-2026-53371","nvd":{"published":"2026-07-19T09:17:02.260","modified":"2026-07-29T16:55:29.373","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: bound node_desc sysfs read with %.64s\n\nnode_desc[64] in struct ib_device is not guaranteed to be NUL-\nterminated. The core IB sysfs handler uses \"%.64s\" for exactly this\nreason (drivers/infiniband/core/sysfs.c:1307), since node_desc_store()\nperforms a raw memcpy of up to IB_DEVICE_NODE_DESC_MAX bytes with no NUL\ntermination:\n\n  memcpy(desc.node_desc, buf, min_t(int, count, IB_DEVICE_NODE_DESC_MAX));\n\nIf exactly 64 bytes are written via the node_desc sysfs file, the array\ncontains no NUL byte. The ionic hca_type_show() handler uses unbounded\n\"%s\" and will read past the end of node_desc into adjacent fields of\nstruct ib_device until it encounters a NUL.\n\nionic supports IB_DEVICE_MODIFY_NODE_DESC, so this is triggerable by\nuserspace.\n\nMatch the core handler and bound the format specifier.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/61df14f306f153bffa2f3c74a94ff5a85c99fa39","https://git.kernel.org/stable/c/654a27f25530d052eeedf086e6c3e2d585c203bd","https://git.kernel.org/stable/c/a3e9372203afde2c62576356bb9a17890bc7fd6c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:45:36.895656543+00:00"},"epss":{"cve":"CVE-2026-53371","score":0.0016,"percentile":0.05168,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}